Recuperator-furnace.



Patented Sept. 22, 1914.

Z SHEETSr-SIIHET 1.

IIIE NORRIS F'FTER5 1:12.. Pr-mro-urnov wAsMINGmN. u. c.

W. A, STUBBLEBINE. RECUPERATOR FURNACE.

APPLICATION FILED 001231, 1913.

1, 1 1 1,414. Patented Sept. 22, 1914 2 SHEETS-SHEET 2.

FIG 9-.

FIG- 3- THE NORRIS F'EIERS 60.. PHOTO-LITHO.. WASHINGTON. By C.

w NrBnn'AsTuBBLEmNE, or AtLnNT'owN, PENNSYLVANIA.

" To all cu/win it may comm. 5

herebjdeclarefthe' followinglto bei'a full, -clean and exact description of the inventlon,

high and state off ifienns Vented (certain newand.

Be' it know that. I I, \WINERED A; Srina- BLEB INQ a; citizen of the; United States, residing Lat Allentown',-fin the county of Lesuch as will enable others skilled lILtl'lQ art to which it appertainsto make. and 'use the i same reference being had to 'the accompany 'ing drawings, and to 'thelletters' and figures oi'referenc'e marked thereomwhich form apart ofthisjspeciiication.

This. invention relates to new the object in viewis to produce a simple and eliicient' apparatus of this nature so con structed as to provide foran increased production inmaterialfbeing treated over the ordinary types of furnacesnow in use.

of construction and combinations and a1.- rangements ofparts which will be here1n-' after fully described, "shown in the accompanying drawings and then specifically dc fined in the appended claim I illustrate m'y 1nve'nt1 n in the acco1n panying drawings, in which:-

.Figure 1 U view longitudinally through the furnace.

- Fig. 2 is a section on line 22 of Fig. 1.

Fig. 3 is a sectional-viewyon line of Fig. 2, and Fig. 4 is a"sectional= View on i apparatus into X 4 5 line lloiEFig.1. j

Reference now b ing had .to the details 'of the drawing by lettenAgdesignates the lire box of the furnacehaying a grate D therein "and A is an opening formed above the bridge wall F and leading into the work ing chamber B which isitheportion of the which the charge of iron or s'teelto be melted or preheated is" placed andin which it'is; necessaryv to maintain an I -K intense heat. Saidfurnace isproyided with a fuelfopening C through which the coal is allowed" to be'inserted upon the grate D. A pipe, designated by lettenE, communi: cates with a" space below the grate and through which-ablastof air maybe "1111310- jducedinto the "furnace? Otherpipes, des- 'ignated by letter G,having branching porj ;tions communicate "with theflower portion a 1" Ofthe chamber s inwhich the checkered Specification of Letters Patent.

' sen-11 Imp'rove-' ments' in Recuperator-Furnaces; and. I do 7 and useful? improvements 1n recuperator;"furnaces and? is a vertical *entral sectional arrangement of fire brick G is lecated spaces intermediate the blocks and through which the blast of aircomingfrom the 1 pipes G is allowed to pass 'and'become heated before emerging into the space in the upper end of the compartment G from which the preheated air makes exit into the passageways J formed in the opposite side walls of the furnace, said passageways havingducts 'K' leading therefrom diagonally into ,the working chamber B. A pipe H communicates, through the branching-pipe,

Patented Septr22, 1914c. Application filed Oetooer 31,1913. $eria 1No.7Q8,52 3. e

H, with the'hpper portion of the chamber -Gr andits ends open into the fines J, as ishownclearly in'Fig. lot the drawings. --The front wall of the furnace adjacent the chamber from which the pipes H lead is provided with series of flues L affording a'means of communication betweenqthe fire chamber A and the compartment M which in'turn communicates about the circumfer- I V ences of the pipes P and H with the passage- The present invention comprises an appa ratus'of this nature having various details ways J. The chamber B has an end wall N in contact with the wall N and a hori- G and M.

The operation of my furnace will. be readily understood and is as follows z The combustion of the fuel within the fire chamher will be expedited by the blast of air in troduced through the pipes. E and the greater part" ofthe gas in the fire chamber will pass over the bridge wall F into the working chamber B. A separate blast will be supplied to the chamber Gr through the pipes G and which passes through the spaces intermediate the brick G where it becomes I preheated before entering the pipes H,'H and into the passageways J. The blast passing from the pipes H, H into said passage ways will create a suction which will draw ,zontal partition N separating the chambers 1 a certain percentage of the gas from the fire chamber through the ports "L inthe a wall of the fire chamber and which will heat the air in the chamber M about the pipes H,

thus further-preheating the air which passes through the pipes H and before itmakes exit into the passageways J. As the gases emerge from the pipes H andfoommingle with thegases coming from thechamber M,

they will be mixed and make exit through a the ,ducts K into the working chamber.

After the furnace is in operation, the 'brick i work becomes "thoroughly heated and the wall N, being next to the intense heat of the fire chamber, becomes redhotthrough and through and this heat is still further taken up by the checkers G pipes G, before entering the pipes P, is pre- "heated' by coming in contact with the check erwork. s

The admission of this 'mixture of pre-w heated air and gas through the ducts K will i catin fire and WOIkiD chambers a "rate b b 7 b with a blast pip communicating with a chamber below the grate, a com aartmen't'adjoining the fire chamber; a checker "work Within. said compartment above and below theichecker work and com -mu.n1cat1'ng wlth each other through the Copies of this patent maybe obtained for five cents each, by address ing the l ,WashingtoniDtC. w

with a chamber The air from the.

has, 5111- si ply ipes leading "1a chamberbelow passageway leading y from the a preheating chamber witliq flues leading from said pa's sageways into the working chamber, a pipe communicating with the chamber above the checker work and" extendinginto said pre- .30 Eng pipes'extending intor andopenihg into- 1 said passageway, the. front "wall; of the furnace intermediate zthef fire a andg l-prehejatlng "chambers and above sald cjoinpartment hav In testiinony whereojf I v hereunto aifix my s'ignaturein presence :OfltWO WltIlGSSQS-i "i f pwnfvi nni' limsTrjBBLieeiNEt. Ijf j heatingchamber and provided withbra'nch Witnesses; 1 V G,;D; MEAsm f a Q AMf J- BL the checker Work, a preheat- .ing chamber above sa d-compartment, -.a 

